GRDX — GRIDAI TECHNOLOGIES CORP
As of Q2 2026, 4 SEC-registered investment managers reported holding GRDX (GRIDAI TECHNOLOGIES CORP) in their latest 13F filings, with a combined reported value of $1.57M across 335.46K shares. That is +52.3% by share count (+115.20K shares) versus the previous quarter, while reported value moved +253.6%. Ownership is concentrated: the five largest holders account for 100.0% of reported value and the top ten for 100.0%.
Compared with the prior quarter, 2 opened new positions, 1 added to existing stakes, 1 trimmed, 2 exited entirely. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.
GRDX is classified in the Health Care sector.
All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.
| Fund | Quarter | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|---|
| Renaissance Technologies history | Q2 2026 | 176.30K | $826.85K | 0.00% | Reduce |
| Citadel Advisors history | Q2 2026 | 85.33K | $400.17K | 0.00% | New |
| Geode Capital Management history | Q2 2026 | 59.90K | $280.93K | 0.00% | Add |
| Vanguard Group history | Q4 2025 | 21.65K | $100.87K | 0.00% | Hold |
| Northern Trust Corp history | Q2 2026 | 13.94K | $65.37K | 0.00% | New |
| UBS Group AG history | Q1 2026 | 3.19K | $6.44K | 0.00% | Add |
| Bank of America Corp history | Q4 2025 | 17 | $79 | 0.00% | Reduce |
| Citigroup Inc history | Q1 2026 | 1 | $2 | 0.00% | Reduce |
New Positions (Q2 2026)
- Citadel Advisors 85.33K sh · $400.17K
- Northern Trust Corp 13.94K sh · $65.37K
Fully Exited (vs previous quarter)
- UBS Group AG sold 3.19K sh · $6.44K
- Citigroup Inc sold 1 sh · $2
Fund Position History — shares by quarter (top 8 funds)
| Fund | Q3 2025 | Q4 2025 | Q1 2026 | Q2 2026 |
|---|---|---|---|---|
| Renaissance Technologies | 86.40K | 31.00K | 183.80K | 176.30K |
| Citadel Advisors | — | — | — | 85.33K |
| Geode Capital Management | 12.72K | 20.36K | 33.27K | 59.90K |
| Northern Trust Corp | — | — | — | 13.94K |
| Bank of America Corp | 103 | 17 | — | — |
| Citigroup Inc | — | 1.83K | 1 | — |
| UBS Group AG | 66 | 536 | 3.19K | — |
| Vanguard Group | 21.65K | 21.65K | — | — |
▲ Bought Low (fund opened/added, stock rose ≥5% next quarter) ▼ Sold High (fund reduced, stock fell ≥5% next quarter)
Drag / scroll to zoom · Default shows the most recent year · Annotations come from quarterly fund actions in 13F filings · Hover a marker for details